Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 981 215 22% 0.01 242 159 66% 6.1
10 Kinds of People 1881 355 19% 0.01 327 214 65% 5.6
2048 2257 1145 51% 0.00 1139 991 87% 1.9
3D Printer 68 21 31% 0.00 25 18 72% 5.9
3-Sided Dice 486 34 7% 0.00 91 29 32% 8.8
4 thought 1747 613 35% 0.00 632 521 82% 2.7
A1 Paper 1264 366 29% 0.00 386 291 75% 4.1
Aaah! 7622 3712 49% 0.00 3107 2902 93% 1.4
A+B Problem 1227 168 14% 0.06 210 91 43% 8.0
Absurdistan Roads II 329 137 42% 0.00 119 82 69% 5.9
Absurdistan Roads III 773 201 26% 0.04 190 137 72% 5.8
A Classy Problem 1759 521 30% 0.02 463 379 82% 3.5
ACM Contest Scoring 1847 1125 61% 0.00 1006 955 95% 1.4
Adding Words 1885 373 20% 0.00 475 317 67% 4.8
A Different List Game 2796 214 8% 0.00 332 54 16% 9.2
A Different Problem 8733 3645 42% 0.00 3373 2943 87% 2.0
Adjoin the Networks 625 193 31% 0.00 168 125 74% 6.0
Administrative Difficulties 304 71 23% 0.05 81 55 68% 4.8
Adventures in Moving -- Part IV 310 93 30% 0.00 97 79 81% 5.0
A Feast For Cats 484 158 33% 0.56 121 99 82% 4.4
Air Conditioned Minions 1256 350 28% 0.00 393 285 73% 4.0
Airline Hub 826 160 19% 0.01 162 99 61% 5.8
Airport Logistics 18 3 17% 0.37 4 3 75% 6.1
Airports 60 24 40% 0.23 20 14 70% 6.9
Akcija 838 381 45% 0.01 356 313 88% 2.1
Aladin 572 47 8% 0.17 80 12 15% 9.0
Alchemy 22 5 23% 0.03 12 5 42% 7.4
Alea iacta est 20 10 50% 0.47 9 9 100% 4.7
Alien Numbers 683 358 52% 0.00 347 325 94% 1.7
A List Game 2420 675 28% 0.00 664 545 82% 3.2
All about that base 1429 507 35% 0.00 560 460 82% 2.8
All Different Directions 155 97 63% 0.00 97 86 89% 2.8
All Friends 385 71 18% 0.01 54 33 61% 8.2
All Just A Dream 314 70 22% 0.19 65 47 72% 5.9
All Pairs Shortest Path 1575 250 16% 0.04 208 124 60% 6.9
Almost Perfect 1172 258 22% 0.00 293 224 76% 3.2
Almost Union-Find 2222 267 12% 0.03 366 147 40% 8.2
Alphabet Spam 1991 1314 66% 0.00 824 791 96% 1.4
Alternative Bracket Notation 128 56 44% 0.00 58 50 86% 4.9
Amalgamated Artichokes 1837 822 45% 0.01 731 647 89% 2.2
Amanda Lounges 556 119 21% 0.07 139 96 69% 6.4
Amazing Race 173 45 26% 0.54 48 34 71% 6.9
Ambiguous Result 88 25 28% 0.04 34 24 71% 6.9
Anagram Counting 595 241 41% 0.00 254 208 82% 2.9
Andrew the Ant 11 7 64% 0.12 9 7 78% 5.9
Androids 176 55 31% 0.09 60 39 65% 5.9
A New Alphabet 2931 1374 47% 0.00 1350 1251 93% 1.6
Animal Classification 851 157 18% 0.04 171 110 64% 6.7
An Industrial Spy 530 283 53% 0.02 214 187 87% 3.1
Another Brick in the Wall 431 241 56% 0.00 237 214 90% 2.1
Another Candies 2400 641 27% 0.00 666 538 81% 2.9
Another Dice Game 51 35 69% 0.00 31 29 94% 3.8
Antiarithmetic? 433 122 28% 0.00 129 97 75% 5.0
Ants 781 310 40% 0.01 279 236 85% 2.7
Apaxiaaaaaaaaaaaans! 2209 1433 65% 0.00 1326 1268 96% 1.3
Apparatus 406 87 21% 0.01 69 50 72% 6.0
Apples, Cherries, and Mangos 208 65 31% 0.02 58 47 81% 5.6
Aquarium Tank 181 52 29% 0.00 53 40 75% 4.9
Aqueduct Construction 48 10 21% 0.01 13 10 77% 7.1
Arable Area 134 27 20% 0.08 33 17 52% 8.9
A Rational Sequence 414 168 41% 0.00 166 140 84% 3.7
A Rational Sequence 2 148 121 82% 0.00 120 119 99% 1.4
Arbitrage? 257 33 13% 0.11 29 20 69% 6.2
Arcade! 649 108 17% 0.01 110 77 70% 5.4
Arctic Network 534 199 37% 0.02 156 133 85% 3.8
A Real Challenge 1538 749 49% 0.00 722 679 94% 1.4
Area of Effect 78 8 10% 4.74 13 6 46% 7.8
Arithmetic 149 28 19% 0.01 39 26 67% 5.1
Army Strength (Easy) 1115 584 52% 0.00 514 467 91% 1.8
Army Strength (Hard) 1241 612 49% 0.01 431 380 88% 2.4
Around and Around We Go 3 1 33% 0.00 2 1 50% 8.7
Around the Track 157 24 15% 0.00 34 16 47% 8.4
Arranging Hat 77 36 47% 0.10 33 29 88% 4.2
Artur 114 18 16% 0.17 23 13 57% 7.1
Artwork 266 73 27% 0.07 100 57 57% 6.0
A Safe Bet 123 41 33% 0.29 33 28 85% 5.0
ASCII Figure Rotation 591 162 27% 0.00 180 147 82% 4.0
As Easy as CAB 49 18 37% 0.00 20 15 75% 6.1
Aspen Avenue 506 191 38% 0.01 103 75 73% 6.5
Assembly Line 17 6 35% 0.68 8 5 62% 6.5
Assigning Workstations 549 187 34% 0.12 188 150 80% 4.4
Association for Computing Machinery 879 360 41% 0.00 341 300 88% 1.8
Association for Control Over Minds 458 177 39% 0.08 173 151 87% 3.3
Association for Convex Main Office 314 83 26% 0.08 78 66 85% 3.7
Association for Cool Machineries (Part 1) 405 79 20% 0.04 107 71 66% 5.9
Association for Cool Machineries (Part 2) 26 17 65% 0.00 17 15 88% 4.1
Association for the Country of Mububa 836 182 22% 0.00 223 141 63% 5.6
Association of Camera Makers 104 4 4% 10.56 7 4 57% 8.5
Association of Cats and Magical Lights 822 191 23% 0.23 169 132 78% 4.7
Association of Computer Maintenance 638 81 13% 0.04 69 41 59% 7.2
Asteroid Rangers 46 27 59% 0.10 18 17 94% 5.1
Asteroids 289 54 19% 0.00 43 35 81% 4.6
A Towering Problem 492 273 55% 0.00 273 245 90% 1.9
Automatic Trading 185 52 28% 0.05 58 40 69% 3.7
A Vicious Pikeman (Easy) 531 147 28% 0.00 115 94 82% 4.4
A Vicious Pikeman (Hard) 321 49 15% 0.01 63 37 59% 8.5
Avogadro 91 26 29% 0.04 32 23 72% 6.3
Avoiding the Apocalypse 134 51 38% 0.01 42 37 88% 4.4
Avoidland 354 214 60% 0.08 97 83 86% 3.9
A Walk Through The Forest 329 68 21% 0.45 69 53 77% 4.0